Small images upload, large images do not (Size 0?)

[tuhe]

Hi!

Thank you for your work on the plugin. I am using the plugin using the default setup from the README outside of the django admin. I can upload / see small images without any problems, but if I copy-paste a large image (i.e. a desktop wallpaper or similar) I get a pop-up error: "Couldn't upload file: image.png.". The error arise from the code Image.open(f) in:

def image_verify(f):
    try:
        Image.open(f).verify()
    except OSError:
        raise NoImageException

https://github.com/hvlads/django-ckeditor-5/blob/master/django_ckeditor_5/views.py#L57

and I think it is because f.size show 0 bytes (this is not the case for small images). My best guess is that this might be happening on the frontend, perhaps due to a limit (?), but I cannot find an option to set in the settings.py file (changing CKEDITOR_5_MAX_FILE_SIZE = 10 does not do anything but my understanding is also that the default is infinite size). Other parts of the application has no problem with large files (100 mb) so I don't think it is a middleware issue or similar. Any help would be greatly appreciated!

[tuhe]

I tried to set the default handler to MemoryFileHandler in settings.py using:

FILE_UPLOAD_HANDLERS = [
    "django.core.files.uploadhandler.MemoryFileUploadHandler",
    # "django.core.files.uploadhandler.TemporaryFileUploadHandler",
]

but no luck. As far as I can tell, the image is simply not being uploaded correctly (i.e., request.FILES['upload'] has size 0) and I wonder if it is a front-end issue of some sort. The image is not too big and the problem can be re-produced by:

• set up ckeditor5 using default settings
• download this picture https://www.freepik.com/free-vector/night-ocean-landscape-full-moon-stars-shine_17740155.htm#query=desktop%20wallpaper&position=10&from_view=keyword&track=ais_hybrid&uuid=807d8a97-8392-4a83-8860-19c6cf82a1cc
• copy-paste a region into the ckeditor5 field (works)
• copy paste the entire image into the ckeditor5 field (does not work).

[tuhe]

This is happening with a signed in user, however, the behavior is completely reproducible (small images upload and save, large images do not). It occurs both in production and on a restarted development server. Is there anything I can do to illuminate what the problem is?
(update: this was a response to a now deleted post)

[goapunk]

@tuhe I tried reproducing it with your steps with the example blog app in this repo and I can successfully upload the image via the upload button and via copy and paste. Maybe some more information about browser and operating system would be helpful

[cfdbwrbq]

@tuhe most likely the problem is in nginx server (or Apache)
adding client_max_body_size 1G; to server context solves the problem of loading large files
ps
For Nginx - the default value for client_max_body_size directive is 1 MiB.